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barrier/lib/server/CServer.cpp

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/*
* synergy -- mouse and keyboard sharing utility
* Copyright (C) 2002 Chris Schoeneman
*
* This package is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* found in the file COPYING that should have accompanied this file.
*
* This package is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "CServer.h"
#include "CClientProxy.h"
#include "CClientProxyUnknown.h"
#include "CPrimaryClient.h"
#include "IPlatformScreen.h"
#include "OptionTypes.h"
#include "ProtocolTypes.h"
#include "XScreen.h"
#include "XSynergy.h"
#include "IDataSocket.h"
#include "IListenSocket.h"
#include "XSocket.h"
#include "IEventQueue.h"
#include "CLog.h"
#include "TMethodEventJob.h"
#include "CArch.h"
//
// CServer
//
CEvent::Type CServer::s_errorEvent = CEvent::kUnknown;
CEvent::Type CServer::s_disconnectedEvent = CEvent::kUnknown;
CServer::CServer(const CConfig& config, CPrimaryClient* primaryClient) :
m_primaryClient(primaryClient),
m_active(primaryClient),
m_seqNum(0),
m_config(config),
m_activeSaver(NULL),
m_switchDir(kNoDirection),
m_switchScreen(NULL),
m_switchWaitDelay(0.0),
m_switchWaitTimer(NULL),
m_switchTwoTapDelay(0.0),
m_switchTwoTapEngaged(false),
m_switchTwoTapArmed(false),
m_switchTwoTapZone(3)
{
// must have a primary client and it must have a canonical name
assert(m_primaryClient != NULL);
assert(m_config.isScreen(primaryClient->getName()));
CString primaryName = getName(primaryClient);
// clear clipboards
for (ClipboardID id = 0; id < kClipboardEnd; ++id) {
CClipboardInfo& clipboard = m_clipboards[id];
clipboard.m_clipboardOwner = primaryName;
clipboard.m_clipboardSeqNum = m_seqNum;
if (clipboard.m_clipboard.open(0)) {
clipboard.m_clipboard.empty();
clipboard.m_clipboard.close();
}
clipboard.m_clipboardData = clipboard.m_clipboard.marshall();
}
// install event handlers
EVENTQUEUE->adoptHandler(CEvent::kTimer, this,
new TMethodEventJob<CServer>(this,
&CServer::handleSwitchWaitTimeout));
EVENTQUEUE->adoptHandler(IPlatformScreen::getKeyDownEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleKeyDownEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getKeyUpEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleKeyUpEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getKeyRepeatEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleKeyRepeatEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getButtonDownEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleButtonDownEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getButtonUpEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleButtonUpEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getMotionOnPrimaryEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleMotionPrimaryEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getMotionOnSecondaryEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleMotionSecondaryEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getWheelEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleWheelEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getScreensaverActivatedEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleScreensaverActivatedEvent));
EVENTQUEUE->adoptHandler(IPlatformScreen::getScreensaverDeactivatedEvent(),
m_primaryClient->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleScreensaverDeactivatedEvent));
// add connection
addClient(m_primaryClient);
// tell primary client about its options
sendOptions(m_primaryClient);
m_primaryClient->enable();
}
CServer::~CServer()
{
// remove event handlers and timers
EVENTQUEUE->removeHandler(IPlatformScreen::getKeyDownEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getKeyUpEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getKeyRepeatEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getButtonDownEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getButtonUpEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getMotionOnPrimaryEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getMotionOnSecondaryEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getWheelEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getScreensaverActivatedEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(IPlatformScreen::getScreensaverDeactivatedEvent(),
m_primaryClient->getEventTarget());
EVENTQUEUE->removeHandler(CEvent::kTimer, this);
stopSwitch();
// force immediate disconnection of secondary clients
disconnect();
for (COldClients::iterator index = m_oldClients.begin();
index != m_oldClients.begin(); ++index) {
IClient* client = index->first;
EVENTQUEUE->deleteTimer(index->second);
EVENTQUEUE->removeHandler(CEvent::kTimer, client);
EVENTQUEUE->removeHandler(CClientProxy::getDisconnectedEvent(), client);
delete client;
}
// disconnect primary client
removeClient(m_primaryClient);
}
bool
CServer::setConfig(const CConfig& config)
{
// refuse configuration if it doesn't include the primary screen
if (!config.isScreen(m_primaryClient->getName())) {
return false;
}
// close clients that are connected but being dropped from the
// configuration.
closeClients(config);
// cut over
m_config = config;
processOptions();
// tell primary screen about reconfiguration
m_primaryClient->reconfigure(getActivePrimarySides());
// tell all (connected) clients about current options
for (CClientList::const_iterator index = m_clients.begin();
index != m_clients.end(); ++index) {
IClient* client = index->second;
sendOptions(client);
}
return true;
}
void
CServer::adoptClient(IClient* client)
{
assert(client != NULL);
// watch for client disconnection
EVENTQUEUE->adoptHandler(CClientProxy::getDisconnectedEvent(), client,
new TMethodEventJob<CServer>(this,
&CServer::handleClientDisconnected, client));
// name must be in our configuration
if (!m_config.isScreen(client->getName())) {
LOG((CLOG_WARN "a client with name \"%s\" is not in the map", client->getName().c_str()));
closeClient(client, kMsgEUnknown);
return;
}
// add client to client list
if (!addClient(client)) {
// can only have one screen with a given name at any given time
LOG((CLOG_WARN "a client with name \"%s\" is already connected", getName(client).c_str()));
closeClient(client, kMsgEBusy);
return;
}
LOG((CLOG_NOTE "client \"%s\" has connected", getName(client).c_str()));
// send configuration options to client
sendOptions(client);
// activate screen saver on new client if active on the primary screen
if (m_activeSaver != NULL) {
client->screensaver(true);
}
}
void
CServer::disconnect()
{
// close all secondary clients
if (m_clients.size() > 1 || !m_oldClients.empty()) {
CConfig emptyConfig;
closeClients(emptyConfig);
}
else {
EVENTQUEUE->addEvent(CEvent(getDisconnectedEvent(), this));
}
}
UInt32
CServer::getNumClients() const
{
return m_clients.size();
}
void
CServer::getClients(std::vector<CString>& list) const
{
list.clear();
for (CClientList::const_iterator index = m_clients.begin();
index != m_clients.end(); ++index) {
list.push_back(index->first);
}
}
CEvent::Type
CServer::getErrorEvent()
{
return CEvent::registerTypeOnce(s_errorEvent,
"CServer::error");
}
CEvent::Type
CServer::getDisconnectedEvent()
{
return CEvent::registerTypeOnce(s_disconnectedEvent,
"CServer::disconnected");
}
bool
CServer::onCommandKey(KeyID /*id*/, KeyModifierMask /*mask*/, bool /*down*/)
{
return false;
}
CString
CServer::getName(const IClient* client) const
{
CString name = m_config.getCanonicalName(client->getName());
if (name.empty()) {
name = client->getName();
}
return name;
}
UInt32
CServer::getActivePrimarySides() const
{
UInt32 sides = 0;
if (getNeighbor(m_primaryClient, kLeft) != NULL) {
sides |= kLeftMask;
}
if (getNeighbor(m_primaryClient, kRight) != NULL) {
sides |= kRightMask;
}
if (getNeighbor(m_primaryClient, kTop) != NULL) {
sides |= kTopMask;
}
if (getNeighbor(m_primaryClient, kBottom) != NULL) {
sides |= kBottomMask;
}
return sides;
}
bool
CServer::isLockedToScreen() const
{
// locked if scroll-lock is toggled on
if ((m_primaryClient->getToggleMask() & KeyModifierScrollLock) != 0) {
LOG((CLOG_DEBUG "locked by ScrollLock"));
return true;
}
// locked if primary says we're locked
if (m_primaryClient->isLockedToScreen()) {
return true;
}
// not locked
return false;
}
SInt32
CServer::getJumpZoneSize(IClient* client) const
{
if (client == m_primaryClient) {
return m_primaryClient->getJumpZoneSize();
}
else {
return 0;
}
}
void
CServer::switchScreen(IClient* dst, SInt32 x, SInt32 y, bool forScreensaver)
{
assert(dst != NULL);
#ifndef NDEBUG
{
SInt32 dx, dy, dw, dh;
dst->getShape(dx, dy, dw, dh);
assert(x >= dx && y >= dy && x < dx + dw && y < dy + dh);
}
#endif
assert(m_active != NULL);
LOG((CLOG_INFO "switch from \"%s\" to \"%s\" at %d,%d", getName(m_active).c_str(), getName(dst).c_str(), x, y));
// stop waiting to switch
stopSwitch();
// record new position
m_x = x;
m_y = y;
// wrapping means leaving the active screen and entering it again.
// since that's a waste of time we skip that and just warp the
// mouse.
if (m_active != dst) {
// leave active screen
if (!m_active->leave()) {
// cannot leave screen
LOG((CLOG_WARN "can't leave screen"));
return;
}
// update the primary client's clipboards if we're leaving the
// primary screen.
if (m_active == m_primaryClient) {
for (ClipboardID id = 0; id < kClipboardEnd; ++id) {
CClipboardInfo& clipboard = m_clipboards[id];
if (clipboard.m_clipboardOwner == getName(m_primaryClient)) {
onClipboardChanged(m_primaryClient,
id, clipboard.m_clipboardSeqNum);
}
}
}
// cut over
m_active = dst;
// increment enter sequence number
++m_seqNum;
// enter new screen
m_active->enter(x, y, m_seqNum,
m_primaryClient->getToggleMask(),
forScreensaver);
// send the clipboard data to new active screen
for (ClipboardID id = 0; id < kClipboardEnd; ++id) {
m_active->setClipboard(id, &m_clipboards[id].m_clipboard);
}
}
else {
m_active->mouseMove(x, y);
}
}
IClient*
CServer::getNeighbor(IClient* src, EDirection dir) const
{
// note -- must be locked on entry
assert(src != NULL);
// get source screen name
CString srcName = getName(src);
assert(!srcName.empty());
LOG((CLOG_DEBUG2 "find neighbor on %s of \"%s\"", CConfig::dirName(dir), srcName.c_str()));
// get first neighbor. if it's the source then the source jumps
// to itself and we return the source.
CString dstName(m_config.getNeighbor(srcName, dir));
if (dstName == srcName) {
LOG((CLOG_DEBUG2 "\"%s\" is on %s of \"%s\"", dstName.c_str(), CConfig::dirName(dir), srcName.c_str()));
return src;
}
// keep checking
for (;;) {
// if nothing in that direction then return NULL. if the
// destination is the source then we can make no more
// progress in this direction. since we haven't found a
// connected neighbor we return NULL.
if (dstName.empty() || dstName == srcName) {
LOG((CLOG_DEBUG2 "no neighbor on %s of \"%s\"", CConfig::dirName(dir), srcName.c_str()));
return NULL;
}
// look up neighbor cell. if the screen is connected and
// ready then we can stop.
CClientList::const_iterator index = m_clients.find(dstName);
if (index != m_clients.end()) {
LOG((CLOG_DEBUG2 "\"%s\" is on %s of \"%s\"", dstName.c_str(), CConfig::dirName(dir), srcName.c_str()));
return index->second;
}
// skip over unconnected screen
LOG((CLOG_DEBUG2 "ignored \"%s\" on %s of \"%s\"", dstName.c_str(), CConfig::dirName(dir), srcName.c_str()));
srcName = dstName;
// look up name of neighbor of skipped screen
dstName = m_config.getNeighbor(srcName, dir);
}
}
IClient*
CServer::getNeighbor(IClient* src,
EDirection srcSide, SInt32& x, SInt32& y) const
{
// note -- must be locked on entry
assert(src != NULL);
// get the first neighbor
IClient* dst = getNeighbor(src, srcSide);
if (dst == NULL) {
return NULL;
}
// get the source screen's size (needed for kRight and kBottom)
SInt32 sx, sy, sw, sh;
SInt32 dx, dy, dw, dh;
IClient* lastGoodScreen = src;
lastGoodScreen->getShape(sx, sy, sw, sh);
lastGoodScreen->getShape(dx, dy, dw, dh);
// find destination screen, adjusting x or y (but not both). the
// searches are done in a sort of canonical screen space where
// the upper-left corner is 0,0 for each screen. we adjust from
// actual to canonical position on entry to and from canonical to
// actual on exit from the search.
switch (srcSide) {
case kLeft:
x -= dx;
while (dst != NULL) {
lastGoodScreen = dst;
lastGoodScreen->getShape(dx, dy, dw, dh);
x += dw;
if (x >= 0) {
break;
}
LOG((CLOG_DEBUG2 "skipping over screen %s", getName(dst).c_str()));
dst = getNeighbor(lastGoodScreen, srcSide);
}
assert(lastGoodScreen != NULL);
x += dx;
break;
case kRight:
x -= dx;
while (dst != NULL) {
x -= dw;
lastGoodScreen = dst;
lastGoodScreen->getShape(dx, dy, dw, dh);
if (x < dw) {
break;
}
LOG((CLOG_DEBUG2 "skipping over screen %s", getName(dst).c_str()));
dst = getNeighbor(lastGoodScreen, srcSide);
}
assert(lastGoodScreen != NULL);
x += dx;
break;
case kTop:
y -= dy;
while (dst != NULL) {
lastGoodScreen = dst;
lastGoodScreen->getShape(dx, dy, dw, dh);
y += dh;
if (y >= 0) {
break;
}
LOG((CLOG_DEBUG2 "skipping over screen %s", getName(dst).c_str()));
dst = getNeighbor(lastGoodScreen, srcSide);
}
assert(lastGoodScreen != NULL);
y += dy;
break;
case kBottom:
y -= dy;
while (dst != NULL) {
y -= dh;
lastGoodScreen = dst;
lastGoodScreen->getShape(dx, dy, dw, dh);
if (y < sh) {
break;
}
LOG((CLOG_DEBUG2 "skipping over screen %s", getName(dst).c_str()));
dst = getNeighbor(lastGoodScreen, srcSide);
}
assert(lastGoodScreen != NULL);
y += dy;
break;
case kNoDirection:
assert(0 && "bad direction");
return NULL;
}
// save destination screen
assert(lastGoodScreen != NULL);
dst = lastGoodScreen;
// if entering primary screen then be sure to move in far enough
// to avoid the jump zone. if entering a side that doesn't have
// a neighbor (i.e. an asymmetrical side) then we don't need to
// move inwards because that side can't provoke a jump.
if (dst == m_primaryClient) {
const CString dstName(getName(dst));
switch (srcSide) {
case kLeft:
if (!m_config.getNeighbor(dstName, kRight).empty() &&
x > dx + dw - 1 - getJumpZoneSize(dst))
x = dx + dw - 1 - getJumpZoneSize(dst);
break;
case kRight:
if (!m_config.getNeighbor(dstName, kLeft).empty() &&
x < dx + getJumpZoneSize(dst))
x = dx + getJumpZoneSize(dst);
break;
case kTop:
if (!m_config.getNeighbor(dstName, kBottom).empty() &&
y > dy + dh - 1 - getJumpZoneSize(dst))
y = dy + dh - 1 - getJumpZoneSize(dst);
break;
case kBottom:
if (!m_config.getNeighbor(dstName, kTop).empty() &&
y < dy + getJumpZoneSize(dst))
y = dy + getJumpZoneSize(dst);
break;
case kNoDirection:
assert(0 && "bad direction");
return NULL;
}
}
// adjust the coordinate orthogonal to srcSide to account for
// resolution differences. for example, if y is 200 pixels from
// the top on a screen 1000 pixels high (20% from the top) when
// we cross the left edge onto a screen 600 pixels high then y
// should be set 120 pixels from the top (again 20% from the
// top).
switch (srcSide) {
case kLeft:
case kRight:
y -= sy;
if (y < 0) {
y = 0;
}
else if (y >= sh) {
y = dh - 1;
}
else {
y = static_cast<SInt32>(0.5 + y *
static_cast<double>(dh - 1) / (sh - 1));
}
y += dy;
break;
case kTop:
case kBottom:
x -= sx;
if (x < 0) {
x = 0;
}
else if (x >= sw) {
x = dw - 1;
}
else {
x = static_cast<SInt32>(0.5 + x *
static_cast<double>(dw - 1) / (sw - 1));
}
x += dx;
break;
case kNoDirection:
assert(0 && "bad direction");
return NULL;
}
return dst;
}
bool
CServer::isSwitchOkay(IClient* newScreen, EDirection dir, SInt32 x, SInt32 y)
{
LOG((CLOG_DEBUG1 "try to leave \"%s\" on %s", getName(m_active).c_str(), CConfig::dirName(dir)));
// is there a neighbor?
if (newScreen == NULL) {
// there's no neighbor. we don't want to switch and we don't
// want to try to switch later.
LOG((CLOG_DEBUG1 "no neighbor %s", CConfig::dirName(dir)));
stopSwitch();
return false;
}
// should we switch or not?
bool preventSwitch = false;
bool allowSwitch = false;
// note if the switch direction has changed. save the new
// direction and screen if so.
bool isNewDirection = (dir != m_switchDir);
if (isNewDirection || m_switchScreen == NULL) {
m_switchDir = dir;
m_switchScreen = newScreen;
}
// is this a double tap and do we care?
if (!allowSwitch && m_switchTwoTapDelay > 0.0) {
if (isNewDirection ||
!isSwitchTwoTapStarted() || !shouldSwitchTwoTap()) {
// tapping a different or new edge or second tap not
// fast enough. prepare for second tap.
preventSwitch = true;
startSwitchTwoTap();
}
else {
// got second tap
allowSwitch = true;
}
}
// if waiting before a switch then prepare to switch later
if (!allowSwitch && m_switchWaitDelay > 0.0) {
if (isNewDirection || !isSwitchWaitStarted()) {
startSwitchWait(x, y);
}
preventSwitch = true;
}
// ignore if mouse is locked to screen and don't try to switch later
if (!preventSwitch && isLockedToScreen()) {
LOG((CLOG_DEBUG1 "locked to screen"));
preventSwitch = true;
stopSwitch();
}
return !preventSwitch;
}
void
CServer::noSwitch(SInt32 x, SInt32 y)
{
armSwitchTwoTap(x, y);
stopSwitchWait();
}
void
CServer::stopSwitch()
{
if (m_switchScreen != NULL) {
m_switchScreen = NULL;
m_switchDir = kNoDirection;
stopSwitchTwoTap();
stopSwitchWait();
}
}
void
CServer::startSwitchTwoTap()
{
m_switchTwoTapEngaged = true;
m_switchTwoTapArmed = false;
m_switchTwoTapTimer.reset();
LOG((CLOG_DEBUG1 "waiting for second tap"));
}
void
CServer::armSwitchTwoTap(SInt32 x, SInt32 y)
{
if (m_switchTwoTapEngaged) {
if (m_switchTwoTapTimer.getTime() > m_switchTwoTapDelay) {
// second tap took too long. disengage.
stopSwitchTwoTap();
}
else if (!m_switchTwoTapArmed) {
// still time for a double tap. see if we left the tap
// zone and, if so, arm the two tap.
SInt32 ax, ay, aw, ah;
m_active->getShape(ax, ay, aw, ah);
SInt32 tapZone = m_primaryClient->getJumpZoneSize();
if (tapZone < m_switchTwoTapZone) {
tapZone = m_switchTwoTapZone;
}
if (x >= ax + tapZone && x < ax + aw - tapZone &&
y >= ay + tapZone && y < ay + ah - tapZone) {
m_switchTwoTapArmed = true;
}
}
}
}
void
CServer::stopSwitchTwoTap()
{
m_switchTwoTapEngaged = false;
m_switchTwoTapArmed = false;
}
bool
CServer::isSwitchTwoTapStarted() const
{
return m_switchTwoTapEngaged;
}
bool
CServer::shouldSwitchTwoTap() const
{
// this is the second tap if two-tap is armed and this tap
// came fast enough
return (m_switchTwoTapArmed &&
m_switchTwoTapTimer.getTime() <= m_switchTwoTapDelay);
}
void
CServer::startSwitchWait(SInt32 x, SInt32 y)
{
stopSwitchWait();
m_switchWaitX = x;
m_switchWaitY = y;
m_switchWaitTimer = EVENTQUEUE->newOneShotTimer(m_switchWaitDelay, this);
LOG((CLOG_DEBUG1 "waiting to switch"));
}
void
CServer::stopSwitchWait()
{
if (m_switchWaitTimer != NULL) {
EVENTQUEUE->deleteTimer(m_switchWaitTimer);
m_switchWaitTimer = NULL;
}
}
bool
CServer::isSwitchWaitStarted() const
{
return (m_switchWaitTimer != NULL);
}
void
CServer::sendOptions(IClient* client) const
{
COptionsList optionsList;
// look up options for client
const CConfig::CScreenOptions* options =
m_config.getOptions(getName(client));
if (options != NULL) {
// convert options to a more convenient form for sending
optionsList.reserve(2 * options->size());
for (CConfig::CScreenOptions::const_iterator index = options->begin();
index != options->end(); ++index) {
optionsList.push_back(index->first);
optionsList.push_back(static_cast<UInt32>(index->second));
}
}
// look up global options
options = m_config.getOptions("");
if (options != NULL) {
// convert options to a more convenient form for sending
optionsList.reserve(optionsList.size() + 2 * options->size());
for (CConfig::CScreenOptions::const_iterator index = options->begin();
index != options->end(); ++index) {
optionsList.push_back(index->first);
optionsList.push_back(static_cast<UInt32>(index->second));
}
}
// send the options
client->setOptions(optionsList);
}
void
CServer::processOptions()
{
const CConfig::CScreenOptions* options = m_config.getOptions("");
if (options == NULL) {
return;
}
for (CConfig::CScreenOptions::const_iterator index = options->begin();
index != options->end(); ++index) {
const OptionID id = index->first;
const OptionValue value = index->second;
if (id == kOptionScreenSwitchDelay) {
m_switchWaitDelay = 1.0e-3 * static_cast<double>(value);
if (m_switchWaitDelay < 0.0) {
m_switchWaitDelay = 0.0;
}
stopSwitchWait();
}
else if (id == kOptionScreenSwitchTwoTap) {
m_switchTwoTapDelay = 1.0e-3 * static_cast<double>(value);
if (m_switchTwoTapDelay < 0.0) {
m_switchTwoTapDelay = 0.0;
}
stopSwitchTwoTap();
}
}
}
void
CServer::handleShapeChanged(const CEvent&, void* vclient)
{
// ignore events from unknown clients
IClient* client = reinterpret_cast<IClient*>(vclient);
if (m_clientSet.count(client) == 0) {
return;
}
// update the mouse coordinates
if (client == m_active) {
client->getCursorPos(m_x, m_y);
}
LOG((CLOG_INFO "screen \"%s\" shape changed", getName(client).c_str()));
// handle resolution change to primary screen
if (client == m_primaryClient) {
if (client == m_active) {
onMouseMovePrimary(m_x, m_y);
}
else {
onMouseMoveSecondary(0, 0);
}
}
}
void
CServer::handleClipboardGrabbed(const CEvent& event, void* vclient)
{
// ignore events from unknown clients
IClient* grabber = reinterpret_cast<IClient*>(vclient);
if (m_clientSet.count(grabber) == 0) {
return;
}
const IScreen::CClipboardInfo* info =
reinterpret_cast<const IScreen::CClipboardInfo*>(event.getData());
// ignore grab if sequence number is old. always allow primary
// screen to grab.
CClipboardInfo& clipboard = m_clipboards[info->m_id];
if (grabber != m_primaryClient &&
info->m_sequenceNumber < clipboard.m_clipboardSeqNum) {
LOG((CLOG_INFO "ignored screen \"%s\" grab of clipboard %d", getName(grabber).c_str(), info->m_id));
return;
}
// mark screen as owning clipboard
LOG((CLOG_INFO "screen \"%s\" grabbed clipboard %d from \"%s\"", getName(grabber).c_str(), info->m_id, clipboard.m_clipboardOwner.c_str()));
clipboard.m_clipboardOwner = getName(grabber);
clipboard.m_clipboardSeqNum = info->m_sequenceNumber;
// clear the clipboard data (since it's not known at this point)
if (clipboard.m_clipboard.open(0)) {
clipboard.m_clipboard.empty();
clipboard.m_clipboard.close();
}
clipboard.m_clipboardData = clipboard.m_clipboard.marshall();
// tell all other screens to take ownership of clipboard. tell the
// grabber that it's clipboard isn't dirty.
for (CClientList::iterator index = m_clients.begin();
index != m_clients.end(); ++index) {
IClient* client = index->second;
if (client == grabber) {
client->setClipboardDirty(info->m_id, false);
}
else {
client->grabClipboard(info->m_id);
}
}
}
void
CServer::handleClipboardChanged(const CEvent& event, void* vclient)
{
// ignore events from unknown clients
IClient* sender = reinterpret_cast<IClient*>(vclient);
if (m_clientSet.count(sender) == 0) {
return;
}
const IScreen::CClipboardInfo* info =
reinterpret_cast<const IScreen::CClipboardInfo*>(event.getData());
onClipboardChanged(sender, info->m_id, info->m_sequenceNumber);
}
void
CServer::handleKeyDownEvent(const CEvent& event, void*)
{
IPlatformScreen::CKeyInfo* info =
reinterpret_cast<IPlatformScreen::CKeyInfo*>(event.getData());
onKeyDown(info->m_key, info->m_mask, info->m_button);
}
void
CServer::handleKeyUpEvent(const CEvent& event, void*)
{
IPlatformScreen::CKeyInfo* info =
reinterpret_cast<IPlatformScreen::CKeyInfo*>(event.getData());
onKeyUp(info->m_key, info->m_mask, info->m_button);
}
void
CServer::handleKeyRepeatEvent(const CEvent& event, void*)
{
IPlatformScreen::CKeyInfo* info =
reinterpret_cast<IPlatformScreen::CKeyInfo*>(event.getData());
onKeyRepeat(info->m_key, info->m_mask, info->m_count, info->m_button);
}
void
CServer::handleButtonDownEvent(const CEvent& event, void*)
{
IPlatformScreen::CButtonInfo* info =
reinterpret_cast<IPlatformScreen::CButtonInfo*>(event.getData());
onMouseDown(info->m_button);
}
void
CServer::handleButtonUpEvent(const CEvent& event, void*)
{
IPlatformScreen::CButtonInfo* info =
reinterpret_cast<IPlatformScreen::CButtonInfo*>(event.getData());
onMouseUp(info->m_button);
}
void
CServer::handleMotionPrimaryEvent(const CEvent& event, void*)
{
IPlatformScreen::CMotionInfo* info =
reinterpret_cast<IPlatformScreen::CMotionInfo*>(event.getData());
onMouseMovePrimary(info->m_x, info->m_y);
}
void
CServer::handleMotionSecondaryEvent(const CEvent& event, void*)
{
IPlatformScreen::CMotionInfo* info =
reinterpret_cast<IPlatformScreen::CMotionInfo*>(event.getData());
onMouseMoveSecondary(info->m_x, info->m_y);
}
void
CServer::handleWheelEvent(const CEvent& event, void*)
{
IPlatformScreen::CWheelInfo* info =
reinterpret_cast<IPlatformScreen::CWheelInfo*>(event.getData());
onMouseWheel(info->m_wheel);
}
void
CServer::handleScreensaverActivatedEvent(const CEvent&, void*)
{
onScreensaver(true);
}
void
CServer::handleScreensaverDeactivatedEvent(const CEvent&, void*)
{
onScreensaver(false);
}
void
CServer::handleSwitchWaitTimeout(const CEvent&, void*)
{
// ignore if mouse is locked to screen
if (isLockedToScreen()) {
LOG((CLOG_DEBUG1 "locked to screen"));
stopSwitch();
return;
}
// switch screen
switchScreen(m_switchScreen, m_switchWaitX, m_switchWaitY, false);
}
void
CServer::handleClientDisconnected(const CEvent&, void* vclient)
{
// client has disconnected. it might be an old client or an
// active client. we don't care so just handle it both ways.
IClient* client = reinterpret_cast<IClient*>(vclient);
removeActiveClient(client);
removeOldClient(client);
delete client;
}
void
CServer::handleClientCloseTimeout(const CEvent&, void* vclient)
{
// client took too long to disconnect. just dump it.
IClient* client = reinterpret_cast<IClient*>(vclient);
LOG((CLOG_NOTE "forced disconnection of client \"%s\"", getName(client).c_str()));
removeOldClient(client);
delete client;
}
void
CServer::onClipboardChanged(IClient* sender, ClipboardID id, UInt32 seqNum)
{
CClipboardInfo& clipboard = m_clipboards[id];
// ignore update if sequence number is old
if (seqNum < clipboard.m_clipboardSeqNum) {
LOG((CLOG_INFO "ignored screen \"%s\" update of clipboard %d (missequenced)", clipboard.m_clipboardOwner.c_str(), id));
return;
}
// should be the expected client
assert(sender == m_clients.find(clipboard.m_clipboardOwner)->second);
// get data
sender->getClipboard(id, &clipboard.m_clipboard);
// ignore if data hasn't changed
CString data = clipboard.m_clipboard.marshall();
if (data == clipboard.m_clipboardData) {
LOG((CLOG_DEBUG "ignored screen \"%s\" update of clipboard %d (unchanged)", clipboard.m_clipboardOwner.c_str(), id));
return;
}
// got new data
LOG((CLOG_INFO "screen \"%s\" updated clipboard %d", clipboard.m_clipboardOwner.c_str(), id));
clipboard.m_clipboardData = data;
// tell all clients except the sender that the clipboard is dirty
for (CClientList::const_iterator index = m_clients.begin();
index != m_clients.end(); ++index) {
IClient* client = index->second;
client->setClipboardDirty(id, client != sender);
}
// send the new clipboard to the active screen
m_active->setClipboard(id, &clipboard.m_clipboard);
}
void
CServer::onScreensaver(bool activated)
{
LOG((CLOG_DEBUG "onScreenSaver %s", activated ? "activated" : "deactivated"));
if (activated) {
// save current screen and position
m_activeSaver = m_active;
m_xSaver = m_x;
m_ySaver = m_y;
// jump to primary screen
if (m_active != m_primaryClient) {
switchScreen(m_primaryClient, 0, 0, true);
}
}
else {
// jump back to previous screen and position. we must check
// that the position is still valid since the screen may have
// changed resolutions while the screen saver was running.
if (m_activeSaver != NULL && m_activeSaver != m_primaryClient) {
// check position
IClient* screen = m_activeSaver;
SInt32 x, y, w, h;
screen->getShape(x, y, w, h);
SInt32 zoneSize = getJumpZoneSize(screen);
if (m_xSaver < x + zoneSize) {
m_xSaver = x + zoneSize;
}
else if (m_xSaver >= x + w - zoneSize) {
m_xSaver = x + w - zoneSize - 1;
}
if (m_ySaver < y + zoneSize) {
m_ySaver = y + zoneSize;
}
else if (m_ySaver >= y + h - zoneSize) {
m_ySaver = y + h - zoneSize - 1;
}
// jump
switchScreen(screen, m_xSaver, m_ySaver, false);
}
// reset state
m_activeSaver = NULL;
}
// send message to all clients
for (CClientList::const_iterator index = m_clients.begin();
index != m_clients.end(); ++index) {
IClient* client = index->second;
client->screensaver(activated);
}
}
void
CServer::onKeyDown(KeyID id, KeyModifierMask mask, KeyButton button)
{
LOG((CLOG_DEBUG1 "onKeyDown id=%d mask=0x%04x button=0x%04x", id, mask, button));
assert(m_active != NULL);
// handle command keys
if (onCommandKey(id, mask, true)) {
return;
}
// relay
m_active->keyDown(id, mask, button);
}
void
CServer::onKeyUp(KeyID id, KeyModifierMask mask, KeyButton button)
{
LOG((CLOG_DEBUG1 "onKeyUp id=%d mask=0x%04x button=0x%04x", id, mask, button));
assert(m_active != NULL);
// handle command keys
if (onCommandKey(id, mask, false)) {
return;
}
// relay
m_active->keyUp(id, mask, button);
}
void
CServer::onKeyRepeat(KeyID id, KeyModifierMask mask,
SInt32 count, KeyButton button)
{
LOG((CLOG_DEBUG1 "onKeyRepeat id=%d mask=0x%04x count=%d button=0x%04x", id, mask, count, button));
assert(m_active != NULL);
// handle command keys
if (onCommandKey(id, mask, false)) {
onCommandKey(id, mask, true);
return;
}
// relay
m_active->keyRepeat(id, mask, count, button);
}
void
CServer::onMouseDown(ButtonID id)
{
LOG((CLOG_DEBUG1 "onMouseDown id=%d", id));
assert(m_active != NULL);
// relay
m_active->mouseDown(id);
}
void
CServer::onMouseUp(ButtonID id)
{
LOG((CLOG_DEBUG1 "onMouseUp id=%d", id));
assert(m_active != NULL);
// relay
m_active->mouseUp(id);
}
bool
CServer::onMouseMovePrimary(SInt32 x, SInt32 y)
{
LOG((CLOG_DEBUG2 "onMouseMovePrimary %d,%d", x, y));
// mouse move on primary (server's) screen
assert(m_active == m_primaryClient);
// save position
m_x = x;
m_y = y;
// get screen shape
SInt32 ax, ay, aw, ah;
m_active->getShape(ax, ay, aw, ah);
SInt32 zoneSize = getJumpZoneSize(m_active);
// see if we should change screens
EDirection dir;
if (x < ax + zoneSize) {
x -= zoneSize;
dir = kLeft;
}
else if (x >= ax + aw - zoneSize) {
x += zoneSize;
dir = kRight;
}
else if (y < ay + zoneSize) {
y -= zoneSize;
dir = kTop;
}
else if (y >= ay + ah - zoneSize) {
y += zoneSize;
dir = kBottom;
}
else {
// still on local screen
noSwitch(x, y);
return false;
}
// get jump destination
IClient* newScreen = getNeighbor(m_active, dir, x, y);
// should we switch or not?
if (isSwitchOkay(newScreen, dir, x, y)) {
// switch screen
switchScreen(newScreen, x, y, false);
return true;
}
else {
return false;
}
}
void
CServer::onMouseMoveSecondary(SInt32 dx, SInt32 dy)
{
LOG((CLOG_DEBUG2 "onMouseMoveSecondary %+d,%+d", dx, dy));
// mouse move on secondary (client's) screen
assert(m_active != NULL);
if (m_active == m_primaryClient) {
// we're actually on the primary screen. this can happen
// when the primary screen begins processing a mouse move
// for a secondary screen, then the active (secondary)
// screen disconnects causing us to jump to the primary
// screen, and finally the primary screen finishes
// processing the mouse move, still thinking it's for
// a secondary screen. we just ignore the motion.
return;
}
// save old position
const SInt32 xOld = m_x;
const SInt32 yOld = m_y;
// accumulate motion
m_x += dx;
m_y += dy;
// get screen shape
SInt32 ax, ay, aw, ah;
m_active->getShape(ax, ay, aw, ah);
// find direction of neighbor and get the neighbor
bool jump = true;
IClient* newScreen;
do {
EDirection dir;
if (m_x < ax) {
dir = kLeft;
}
else if (m_x > ax + aw - 1) {
dir = kRight;
}
else if (m_y < ay) {
dir = kTop;
}
else if (m_y > ay + ah - 1) {
dir = kBottom;
}
else {
// we haven't left the screen
newScreen = m_active;
jump = false;
// if waiting and mouse is not on the border we're waiting
// on then stop waiting. also if it's not on the border
// then arm the double tap.
if (m_switchScreen != NULL) {
bool clearWait;
SInt32 zoneSize = m_primaryClient->getJumpZoneSize();
switch (m_switchDir) {
case kLeft:
clearWait = (m_x >= ax + zoneSize);
break;
case kRight:
clearWait = (m_x <= ax + aw - 1 - zoneSize);
break;
case kTop:
clearWait = (m_y >= ay + zoneSize);
break;
case kBottom:
clearWait = (m_y <= ay + ah - 1 + zoneSize);
break;
default:
clearWait = false;
break;
}
if (clearWait) {
// still on local screen
noSwitch(m_x, m_y);
}
}
// skip rest of block
break;
}
// try to switch screen. get the neighbor.
newScreen = getNeighbor(m_active, dir, m_x, m_y);
// see if we should switch
if (!isSwitchOkay(newScreen, dir, m_x, m_y)) {
newScreen = m_active;
jump = false;
}
} while (false);
if (jump) {
// switch screens
switchScreen(newScreen, m_x, m_y, false);
}
else {
// same screen. clamp mouse to edge.
m_x = xOld + dx;
m_y = yOld + dy;
if (m_x < ax) {
m_x = ax;
LOG((CLOG_DEBUG2 "clamp to left of \"%s\"", getName(m_active).c_str()));
}
else if (m_x > ax + aw - 1) {
m_x = ax + aw - 1;
LOG((CLOG_DEBUG2 "clamp to right of \"%s\"", getName(m_active).c_str()));
}
if (m_y < ay) {
m_y = ay;
LOG((CLOG_DEBUG2 "clamp to top of \"%s\"", getName(m_active).c_str()));
}
else if (m_y > ay + ah - 1) {
m_y = ay + ah - 1;
LOG((CLOG_DEBUG2 "clamp to bottom of \"%s\"", getName(m_active).c_str()));
}
// warp cursor if it moved.
if (m_x != xOld || m_y != yOld) {
LOG((CLOG_DEBUG2 "move on %s to %d,%d", getName(m_active).c_str(), m_x, m_y));
m_active->mouseMove(m_x, m_y);
}
}
}
void
CServer::onMouseWheel(SInt32 delta)
{
LOG((CLOG_DEBUG1 "onMouseWheel %+d", delta));
assert(m_active != NULL);
// relay
m_active->mouseWheel(delta);
}
bool
CServer::addClient(IClient* client)
{
CString name = getName(client);
if (m_clients.count(name) != 0) {
return false;
}
// add event handlers
EVENTQUEUE->adoptHandler(IScreen::getShapeChangedEvent(),
client->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleShapeChanged, client));
EVENTQUEUE->adoptHandler(IScreen::getClipboardGrabbedEvent(),
client->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleClipboardGrabbed, client));
EVENTQUEUE->adoptHandler(IScreen::getClipboardChangedEvent(),
client->getEventTarget(),
new TMethodEventJob<CServer>(this,
&CServer::handleClipboardChanged, client));
// add to list
m_clientSet.insert(client);
m_clients.insert(std::make_pair(name, client));
// tell primary client about the active sides
m_primaryClient->reconfigure(getActivePrimarySides());
return true;
}
bool
CServer::removeClient(IClient* client)
{
// return false if not in list
CClientList::iterator i = m_clients.find(getName(client));
if (i == m_clients.end()) {
return false;
}
// remove event handlers
EVENTQUEUE->removeHandler(IScreen::getShapeChangedEvent(),
client->getEventTarget());
EVENTQUEUE->removeHandler(IScreen::getClipboardGrabbedEvent(),
client->getEventTarget());
EVENTQUEUE->removeHandler(IScreen::getClipboardChangedEvent(),
client->getEventTarget());
// remove from list
m_clients.erase(i);
m_clientSet.erase(client);
return true;
}
void
CServer::closeClient(IClient* client, const char* msg)
{
assert(client != m_primaryClient);
assert(msg != NULL);
// send message to client. this message should cause the client
// to disconnect. we add this client to the closed client list
// and install a timer to remove the client if it doesn't respond
// quickly enough. we also remove the client from the active
// client list since we're not going to listen to it anymore.
// note that this method also works on clients that are not in
// the m_clients list. adoptClient() may call us with such a
// client.
LOG((CLOG_NOTE "disconnecting client \"%s\"", getName(client).c_str()));
// send message
// FIXME -- avoid type cast (kinda hard, though)
((CClientProxy*)client)->close(msg);
// install timer. wait timeout seconds for client to close.
double timeout = 5.0;
CEventQueueTimer* timer = EVENTQUEUE->newOneShotTimer(timeout, NULL);
EVENTQUEUE->adoptHandler(CEvent::kTimer, timer,
new TMethodEventJob<CServer>(this,
&CServer::handleClientCloseTimeout, client));
// move client to closing list
removeClient(client);
m_oldClients.insert(std::make_pair(client, timer));
// if this client is the active screen then we have to
// jump off of it
forceLeaveClient(client);
}
void
CServer::closeClients(const CConfig& config)
{
// collect the clients that are connected but are being dropped
// from the configuration (or who's canonical name is changing).
typedef std::set<IClient*> CRemovedClients;
CRemovedClients removed;
for (CClientList::iterator index = m_clients.begin();
index != m_clients.end(); ++index) {
if (!config.isCanonicalName(index->first)) {
removed.insert(index->second);
}
}
// don't close the primary client
removed.erase(m_primaryClient);
// now close them. we collect the list then close in two steps
// because closeClient() modifies the collection we iterate over.
for (CRemovedClients::iterator index = removed.begin();
index != removed.end(); ++index) {
closeClient(*index, kMsgCClose);
}
}
void
CServer::removeActiveClient(IClient* client)
{
if (removeClient(client)) {
forceLeaveClient(client);
EVENTQUEUE->removeHandler(CClientProxy::getDisconnectedEvent(), client);
if (m_clients.size() == 1 && m_oldClients.empty()) {
EVENTQUEUE->addEvent(CEvent(getDisconnectedEvent(), this));
}
}
}
void
CServer::removeOldClient(IClient* client)
{
COldClients::iterator i = m_oldClients.find(client);
if (i != m_oldClients.end()) {
EVENTQUEUE->removeHandler(CClientProxy::getDisconnectedEvent(), client);
EVENTQUEUE->removeHandler(CEvent::kTimer, i->second);
EVENTQUEUE->deleteTimer(i->second);
m_oldClients.erase(i);
if (m_clients.size() == 1 && m_oldClients.empty()) {
EVENTQUEUE->addEvent(CEvent(getDisconnectedEvent(), this));
}
}
}
void
CServer::forceLeaveClient(IClient* client)
{
IClient* active = (m_activeSaver != NULL) ? m_activeSaver : m_active;
if (active == client) {
// record new position (center of primary screen)
m_primaryClient->getCursorCenter(m_x, m_y);
// stop waiting to switch to this client
if (active == m_switchScreen) {
stopSwitch();
}
// don't notify active screen since it has probably already
// disconnected.
LOG((CLOG_INFO "jump from \"%s\" to \"%s\" at %d,%d", getName(active).c_str(), getName(m_primaryClient).c_str(), m_x, m_y));
// cut over
m_active = m_primaryClient;
// enter new screen (unless we already have because of the
// screen saver)
if (m_activeSaver == NULL) {
m_primaryClient->enter(m_x, m_y, m_seqNum,
m_primaryClient->getToggleMask(), false);
}
}
// if this screen had the cursor when the screen saver activated
// then we can't switch back to it when the screen saver
// deactivates.
if (m_activeSaver == client) {
m_activeSaver = NULL;
}
// tell primary client about the active sides
m_primaryClient->reconfigure(getActivePrimarySides());
}
//
// CServer::CClipboardInfo
//
CServer::CClipboardInfo::CClipboardInfo() :
m_clipboard(),
m_clipboardData(),
m_clipboardOwner(),
m_clipboardSeqNum(0)
{
// do nothing
}
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